```html
<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Java自增操作符解析 | 技术小馆</title>
    <link href="https://cdn.staticfile.org/font-awesome/6.4.0/css/all.min.css" rel="stylesheet">
    <link href="https://cdn.staticfile.org/tailwindcss/2.2.19/tailwind.min.css" rel="stylesheet">
    <link href="https://fonts.googleapis.com/css2?family=Noto+Serif+SC:wght@400;500;600;700&family=Noto+Sans+SC:wght@300;400;500;700&display=swap" rel="stylesheet">
    <script src="https://cdn.jsdelivr.net/npm/mermaid@latest/dist/mermaid.min.js"></script>
    <style>
        body {
            font-family: 'Noto Sans SC', Tahoma, Arial, Roboto, "Droid Sans", "Helvetica Neue", "Droid Sans Fallback", "Heiti SC", "Hiragino Sans GB", Simsun, sans-serif;
            color: #333;
            line-height: 1.6;
        }
        .hero {
            background: linear-gradient(135deg, #6e8efb 0%, #a777e3 100%);
            color: white;
        }
        .code-block {
            background: #f8f9fa;
            border-radius: 8px;
            box-shadow: 0 4px 6px rgba(0,0,0,0.05);
        }
        .code-line {
            display: block;
            padding: 0.25rem 1rem;
            border-left: 3px solid #6e8efb;
        }
        .highlight {
            background: rgba(255, 229, 100, 0.3);
            padding: 0.2rem 0.4rem;
            border-radius: 3px;
        }
        .card {
            transition: transform 0.2s ease, box-shadow 0.2s ease;
        }
        .card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(0,0,0,0.1);
        }
        footer {
            background: #1a1a1a;
        }
    </style>
</head>
<body class="bg-gray-50">
    <!-- Hero Section -->
    <section class="hero py-20 px-4 text-center">
        <div class="max-w-4xl mx-auto">
            <h1 class="text-4xl md:text-5xl font-bold mb-6 font-serif">Java自增操作符解析</h1>
            <p class="text-xl md:text-2xl mb-8 opacity-90">深入理解i++与++i的底层机制</p>
            <div class="flex justify-center space-x-4">
                <a href="#explanation" class="px-6 py-3 bg-white text-indigo-600 rounded-full font-medium hover:bg-gray-100 transition">原理详解</a>
                <a href="#examples" class="px-6 py-3 border border-white text-white rounded-full font-medium hover:bg-white hover:bg-opacity-10 transition">代码示例</a>
            </div>
        </div>
    </section>

    <!-- Main Content -->
    <main class="max-w-4xl mx-auto px-4 py-12">
        <!-- Introduction -->
        <section class="mb-16">
            <div class="flex items-center mb-6">
                <div class="w-8 h-8 bg-indigo-500 rounded-full flex items-center justify-center text-white mr-3">
                    <i class="fas fa-question"></i>
                </div>
                <h2 class="text-2xl font-bold text-gray-800 font-serif">为什么输出是0？</h2>
            </div>
            <p class="text-gray-700 mb-6">在Java中，<span class="highlight">i = i++</span>这样的表达式常常让初学者感到困惑。看起来变量i应该自增1，但实际输出却仍然是0。这背后隐藏着什么原理呢？</p>
            <p class="text-gray-700">要理解这个问题，我们需要深入探究Java中自增操作符的工作机制。</p>
        </section>

        <!-- Explanation -->
        <section id="explanation" class="mb-16">
            <div class="flex items-center mb-6">
                <div class="w-8 h-8 bg-indigo-500 rounded-full flex items-center justify-center text-white mr-3">
                    <i class="fas fa-brain"></i>
                </div>
                <h2 class="text-2xl font-bold text-gray-800 font-serif">自增操作符的工作原理</h2>
            </div>
            
            <div class="grid md:grid-cols-2 gap-8 mb-8">
                <!-- Left Card -->
                <div class="card bg-white p-6 rounded-xl shadow-md">
                    <div class="flex items-center mb-4">
                        <div class="w-10 h-10 bg-blue-100 rounded-full flex items-center justify-center text-blue-600 mr-3">
                            <i class="fas fa-plus-circle"></i>
                        </div>
                        <h3 class="text-xl font-bold text-gray-800">后置自增 (i++)</h3>
                    </div>
                    <p class="text-gray-700 mb-4">后置自增操作可以分为三个步骤：</p>
                    <ol class="list-decimal pl-5 space-y-2 text-gray-700">
                        <li><strong>读取</strong> - 读取变量i的当前值</li>
                        <li><strong>计算</strong> - 将i的值加1</li>
                        <li><strong>赋值</strong> - 将新值存储回i</li>
                    </ol>
                    <p class="text-gray-700 mt-4">关键点：<span class="highlight">赋值操作发生在表达式求值之后</span>。</p>
                </div>
                
                <!-- Right Card -->
                <div class="card bg-white p-6 rounded-xl shadow-md">
                    <div class="flex items-center mb-4">
                        <div class="w-10 h-10 bg-purple-100 rounded-full flex items-center justify-center text-purple-600 mr-3">
                            <i class="fas fa-plus-circle"></i>
                        </div>
                        <h3 class="text-xl font-bold text-gray-800">前置自增 (++i)</h3>
                    </div>
                    <p class="text-gray-700 mb-4">前置自增操作顺序不同：</p>
                    <ol class="list-decimal pl-5 space-y-2 text-gray-700">
                        <li><strong>计算</strong> - 将i的值加1</li>
                        <li><strong>赋值</strong> - 将新值存储回i</li>
                        <li><strong>读取</strong> - 读取变量i的新值</li>
                    </ol>
                    <p class="text-gray-700 mt-4">关键点：<span class="highlight">赋值操作发生在表达式求值之前</span>。</p>
                </div>
            </div>
            
            <!-- Mermaid Diagram -->
            <div class="bg-white p-6 rounded-xl shadow-md mb-8">
                <div class="mermaid">
                    graph TD
                        A[i++] --> B[1. 读取i的当前值]
                        B --> C[2. 计算i+1]
                        C --> D[3. 将新值赋给i]
                        D --> E[返回原始值]
                        
                        F[++i] --> G[1. 计算i+1]
                        G --> H[2. 将新值赋给i]
                        H --> I[3. 返回新值]
                </div>
            </div>
            
            <div class="bg-blue-50 p-6 rounded-lg border border-blue-100">
                <div class="flex">
                    <div class="flex-shrink-0 mr-3">
                        <i class="fas fa-lightbulb text-yellow-500 text-2xl"></i>
                    </div>
                    <div>
                        <h3 class="text-lg font-bold text-gray-800 mb-2">记忆口诀</h3>
                        <p class="text-gray-700"><span class="highlight">++在前，先计算再赋值；++在后，先赋值后计算。</span></p>
                    </div>
                </div>
            </div>
        </section>

        <!-- Code Examples -->
        <section id="examples" class="mb-16">
            <div class="flex items-center mb-6">
                <div class="w-8 h-8 bg-indigo-500 rounded-full flex items-center justify-center text-white mr-3">
                    <i class="fas fa-code"></i>
                </div>
                <h2 class="text-2xl font-bold text-gray-800 font-serif">代码解析</h2>
            </div>
            
            <!-- Example 1 -->
            <div class="mb-12">
                <h3 class="text-xl font-bold text-gray-800 mb-4">示例1: i = i++</h3>
                <div class="code-block p-4 mb-4">
                    <code class="code-line">int i = 0;</code>
                    <code class="code-line">i = i++;</code>
                    <code class="code-line">System.out.println(i); <span class="text-gray-500">// 输出0</span></code>
                </div>
                <div class="bg-white p-6 rounded-xl shadow-sm">
                    <h4 class="font-bold text-gray-800 mb-3">执行过程解析：</h4>
                    <ol class="list-decimal pl-5 space-y-2 text-gray-700">
                        <li>初始化i=0</li>
                        <li>执行i++时：
                            <ul class="list-disc pl-5 mt-1">
                                <li>读取i的当前值(0)</li>
                                <li>计算i+1得到1</li>
                                <li>将1赋值给i</li>
                                <li>但表达式i++返回的是<strong>原始值0</strong></li>
                            </ul>
                        </li>
                        <li>所以i = i++实际上是i = 0</li>
                    </ol>
                </div>
            </div>
            
            <!-- Example 2 -->
            <div>
                <h3 class="text-xl font-bold text-gray-800 mb-4">示例2: 混合使用i++和++i</h3>
                <div class="code-block p-4 mb-4">
                    <code class="code-line">int i = 0;</code>
                    <code class="code-line">int i2 = i++; <span class="text-gray-500">// i=1, i2=0</span></code>
                    <code class="code-line">int i3 = ++i; <span class="text-gray-500">// i=2, i3=2</span></code>
                    <code class="code-line">System.out.print(i2); <span class="text-gray-500">// 输出0</span></code>
                    <code class="code-line">System.out.print(i3); <span class="text-gray-500">// 输出2</span></code>
                </div>
                <div class="bg-white p-6 rounded-xl shadow-sm">
                    <h4 class="font-bold text-gray-800 mb-3">执行过程解析：</h4>
                    <ol class="list-decimal pl-5 space-y-2 text-gray-700">
                        <li>初始化i=0</li>
                        <li>i2 = i++：
                            <ul class="list-disc pl-5 mt-1">
                                <li>i++返回0，所以i2=0</li>
                                <li>然后i自增为1</li>
                            </ul>
                        </li>
                        <li>i3 = ++i：
                            <ul class="list-disc pl-5 mt-1">
                                <li>i先自增为2</li>
                                <li>然后返回2，所以i3=2</li>
                            </ul>
                        </li>
                    </ol>
                </div>
            </div>
        </section>

        <!-- Best Practices -->
        <section class="mb-16">
            <div class="flex items-center mb-6">
                <div class="w-8 h-8 bg-indigo-500 rounded-full flex items-center justify-center text-white mr-3">
                    <i class="fas fa-check-circle"></i>
                </div>
                <h2 class="text-2xl font-bold text-gray-800 font-serif">最佳实践建议</h2>
            </div>
            
            <div class="grid md:grid-cols-2 gap-6">
                <div class="bg-white p-6 rounded-xl shadow-sm">
                    <div class="flex items-center mb-3">
                        <i class="fas fa-thumbs-up text-green-500 mr-3"></i>
                        <h3 class="text-lg font-bold text-gray-800">推荐做法</h3>
                    </div>
                    <ul class="list-disc pl-5 space-y-1 text-gray-700">
                        <li>将自增操作单独写在一行</li>
                        <li>在循环中使用简单的i++</li>
                        <li>确保代码清晰易读</li>
                    </ul>
                </div>
                
                <div class="bg-white p-6 rounded-xl shadow-sm">
                    <div class="flex items-center mb-3">
                        <i class="fas fa-thumbs-down text-red-500 mr-3"></i>
                        <h3 class="text-lg font-bold text-gray-800">避免做法</h3>
                    </div>
                    <ul class="list-disc pl-5 space-y-1 text-gray-700">
                        <li>避免在复杂表达式中混合使用前后自增</li>
                        <li>不要依赖表达式求值顺序编写代码</li>
                        <li>避免i = i++这种令人困惑的写法</li>
                    </ul>
                </div>
            </div>
        </section>
    </main>

    <!-- Footer -->
    <footer class="py-8 text-white">
        <div class="max-w-4xl mx-auto px-4 text-center">
            <div class="mb-4">
                <a href="http://www.yuque.com/jtostring" class="text-gray-300 hover:text-white transition duration-300">
                    <span class="font-bold">技术小馆</span>
                </a>
            </div>
            <div class="text-sm text-gray-400">
                <a href="http://www.yuque.com/jtostring" class="hover:text-white transition duration-300">http://www.yuque.com/jtostring</a>
            </div>
        </div>
    </footer>

    <script>
        mermaid.initialize({
            startOnLoad: true,
            theme: 'default',
            flowchart: {
                useMaxWidth: true,
                htmlLabels: true,
                curve: 'basis'
            }
        });
    </script>
</body>
</html>
```